4-Fluorophenyl isocyanate → HCID 18969254, compound

Participants

Reaction Conditions

Reaction Steps

The product from Example 23, as the free base (0.330 g, 1 mmol) was stirred in 8 mL tetrahydrofuran and cooled in an ice bath to 10° C. To the mixture was added dropwise 4-fluorophenyl isocyanate (0.11 mL, 1 mmol) and the resulting mixture was stirred 1.5 h at room temperature and filtered, and the filtrate was evaporated to an oil. Crystallization as the oxalate salt from ethyl acetate/methanol provided 0.147 g colorless crystals. Mp 158° C. Mass spectrum, m+ =466. Anal (C27H33 FN6O6) theory C, 58.27; H, 5.98; N, 15.10; found C, 58.48; H, 6.23; N, 14.94.

Provenance & Evidence